From patchwork Tue Jun 4 11:19:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Young X-Patchwork-Id: 10974753 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2CA1B1398 for ; Tue, 4 Jun 2019 11:19:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 190102867C for ; Tue, 4 Jun 2019 11:19:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0CBF0286FF; Tue, 4 Jun 2019 11:19:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D73E02867C for ; Tue, 4 Jun 2019 11:19:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727325AbfFDLTd (ORCPT ); Tue, 4 Jun 2019 07:19:33 -0400 Received: from gofer.mess.org ([88.97.38.141]:53489 "EHLO gofer.mess.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727180AbfFDLTc (ORCPT ); Tue, 4 Jun 2019 07:19:32 -0400 Received: by gofer.mess.org (Postfix, from userid 1000) id DC281604C0; Tue, 4 Jun 2019 12:19:30 +0100 (BST) From: Sean Young To: linux-media@vger.kernel.org, Oliver Endriss , Holger Waechtler Subject: [PATCH] media: ttpci: use rc-core for the IR receiver Date: Tue, 4 Jun 2019 12:19:30 +0100 Message-Id: <20190604111930.7153-1-sean@mess.org> X-Mailer: git-send-email 2.11.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The IR protocol can be set via the rc protocols sysfs file rather than via module parameters and a custom procfs file. So, it is no longer necessary to periodically check for protocol changes. The IR_RCMM protocol does not match the Philips RC-MM protocol (12, 24 or 32 bit variants) so this is marked RC_PROTO_UNKNOWN for now. This protocol not used by the remote for this device. Tested on Technotrend/Hauppauge WinTV Nexus-S rev2.1, which comes with a small black hauppauge remote. Signed-off-by: Sean Young --- drivers/media/pci/ttpci/av7110.c | 14 +- drivers/media/pci/ttpci/av7110.h | 21 +- drivers/media/pci/ttpci/av7110_ir.c | 423 ++++++------------------ drivers/media/rc/keymaps/rc-hauppauge.c | 1 + 4 files changed, 112 insertions(+), 347 deletions(-) diff --git a/drivers/media/pci/ttpci/av7110.c b/drivers/media/pci/ttpci/av7110.c index e6ee23544a6e..d0cdee1c6eb0 100644 --- a/drivers/media/pci/ttpci/av7110.c +++ b/drivers/media/pci/ttpci/av7110.c @@ -218,7 +218,7 @@ static void recover_arm(struct av7110 *av7110) restart_feeds(av7110); #if IS_ENABLED(CONFIG_DVB_AV7110_IR) - av7110_check_ir_config(av7110, true); + av7110_set_ir_config(av7110); #endif } @@ -250,10 +250,6 @@ static int arm_thread(void *data) if (!av7110->arm_ready) continue; -#if IS_ENABLED(CONFIG_DVB_AV7110_IR) - av7110_check_ir_config(av7110, false); -#endif - if (mutex_lock_interruptible(&av7110->dcomlock)) break; newloops = rdebi(av7110, DEBINOSWAP, STATUS_LOOPS, 0, 2); @@ -659,9 +655,11 @@ static void gpioirq(unsigned long cookie) return; case DATA_IRCOMMAND: - if (av7110->ir.ir_handler) - av7110->ir.ir_handler(av7110, - swahw32(irdebi(av7110, DEBINOSWAP, Reserved, 0, 4))); +#if IS_ENABLED(CONFIG_DVB_AV7110_IR) + av7110_ir_handler(av7110, + swahw32(irdebi(av7110, DEBINOSWAP, Reserved, + 0, 4))); +#endif iwdebi(av7110, DEBINOSWAP, RX_BUFF, 0, 2); break; diff --git a/drivers/media/pci/ttpci/av7110.h b/drivers/media/pci/ttpci/av7110.h index 8606ef5ebbe2..809d938ae166 100644 --- a/drivers/media/pci/ttpci/av7110.h +++ b/drivers/media/pci/ttpci/av7110.h @@ -81,23 +81,11 @@ struct av7110; /* infrared remote control */ struct infrared { - u16 key_map[256]; - struct input_dev *input_dev; + struct rc_dev *rcdev; char input_phys[32]; - struct timer_list keyup_timer; - struct tasklet_struct ir_tasklet; - void (*ir_handler)(struct av7110 *av7110, u32 ircom); - u32 ir_command; u32 ir_config; - u32 device_mask; - u8 protocol; - u8 inversion; - u16 last_key; - u16 last_toggle; - bool keypressed; }; - /* place to store all the necessary device information */ struct av7110 { @@ -304,9 +292,10 @@ struct av7110 { extern int ChangePIDs(struct av7110 *av7110, u16 vpid, u16 apid, u16 ttpid, u16 subpid, u16 pcrpid); -extern int av7110_check_ir_config(struct av7110 *av7110, int force); -extern int av7110_ir_init(struct av7110 *av7110); -extern void av7110_ir_exit(struct av7110 *av7110); +void av7110_ir_handler(struct av7110 *av7110, u32 ircom); +int av7110_set_ir_config(struct av7110 *av7110); +int av7110_ir_init(struct av7110 *av7110); +void av7110_ir_exit(struct av7110 *av7110); /* msp3400 i2c subaddresses */ #define MSP_WR_DEM 0x10 diff --git a/drivers/media/pci/ttpci/av7110_ir.c b/drivers/media/pci/ttpci/av7110_ir.c index dfa18878e5f0..f1094659dfb9 100644 --- a/drivers/media/pci/ttpci/av7110_ir.c +++ b/drivers/media/pci/ttpci/av7110_ir.c @@ -4,379 +4,156 @@ * * Copyright (C) 1999-2003 Holger Waechtler * Copyright (C) 2003-2007 Oliver Endriss + * Copyright (C) 2019 Sean Young */ - -#include -#include -#include -#include #include -#include +#include #include "av7110.h" #include "av7110_hw.h" - -#define AV_CNT 4 - #define IR_RC5 0 #define IR_RCMM 1 #define IR_RC5_EXT 2 /* internal only */ -#define IR_ALL 0xffffffff - -#define UP_TIMEOUT (HZ*7/25) - - -/* Note: enable ir debugging by or'ing debug with 16 */ - -static int ir_protocol[AV_CNT] = { IR_RCMM, IR_RCMM, IR_RCMM, IR_RCMM}; -module_param_array(ir_protocol, int, NULL, 0644); -MODULE_PARM_DESC(ir_protocol, "Infrared protocol: 0 RC5, 1 RCMM (default)"); - -static int ir_inversion[AV_CNT]; -module_param_array(ir_inversion, int, NULL, 0644); -MODULE_PARM_DESC(ir_inversion, "Inversion of infrared signal: 0 not inverted (default), 1 inverted"); - -static uint ir_device_mask[AV_CNT] = { IR_ALL, IR_ALL, IR_ALL, IR_ALL }; -module_param_array(ir_device_mask, uint, NULL, 0644); -MODULE_PARM_DESC(ir_device_mask, "Bitmask of infrared devices: bit 0..31 = device 0..31 (default: all)"); - - -static int av_cnt; -static struct av7110 *av_list[AV_CNT]; - -static u16 default_key_map [256] = { - KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, - KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO, - KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0, - 0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0, - KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0, - KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW, - KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN, - 0, 0, 0, 0, KEY_EPG, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR -}; - - -/* key-up timer */ -static void av7110_emit_keyup(struct timer_list *t) -{ - struct infrared *ir = from_timer(ir, t, keyup_timer); - - if (!ir || !ir->keypressed) - return; - - input_report_key(ir->input_dev, ir->last_key, 0); - input_sync(ir->input_dev); - ir->keypressed = false; -} - - -/* tasklet */ -static void av7110_emit_key(unsigned long parm) +/* interrupt handler */ +void av7110_ir_handler(struct av7110 *av7110, u32 ircom) { - struct infrared *ir = (struct infrared *) parm; - u32 ircom = ir->ir_command; - u8 data; - u8 addr; - u16 toggle; - u16 keycode; - - /* extract device address and data */ - switch (ir->protocol) { - case IR_RC5: /* RC5: 5 bits device address, 6 bits data */ - data = ircom & 0x3f; - addr = (ircom >> 6) & 0x1f; - toggle = ircom & 0x0800; - break; + struct rc_dev *rcdev = av7110->ir.rcdev; + enum rc_proto proto; + u32 command, addr, scancode; + u32 toggle; - case IR_RCMM: /* RCMM: ? bits device address, ? bits data */ - data = ircom & 0xff; - addr = (ircom >> 8) & 0x1f; - toggle = ircom & 0x8000; - break; - - case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */ - data = ircom & 0x3f; - addr = (ircom >> 6) & 0x1f; - /* invert 7th data bit for backward compatibility with RC5 keymaps */ - if (!(ircom & 0x1000)) - data |= 0x40; - toggle = ircom & 0x0800; - break; - - default: - printk("%s invalid protocol %x\n", __func__, ir->protocol); - return; - } - - input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data); - input_event(ir->input_dev, EV_MSC, MSC_SCAN, data); - - keycode = ir->key_map[data]; - - dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n", - __func__, ircom, addr, data, keycode); - - /* check device address */ - if (!(ir->device_mask & (1 << addr))) - return; - - if (!keycode) { - printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n", - __func__, ircom, addr, data); - return; - } - - if (ir->keypressed && - (ir->last_key != keycode || toggle != ir->last_toggle)) - input_event(ir->input_dev, EV_KEY, ir->last_key, 0); - - input_event(ir->input_dev, EV_KEY, keycode, 1); - input_sync(ir->input_dev); - - ir->keypressed = true; - ir->last_key = keycode; - ir->last_toggle = toggle; - - mod_timer(&ir->keyup_timer, jiffies + UP_TIMEOUT); -} - - -/* register with input layer */ -static void input_register_keys(struct infrared *ir) -{ - int i; + dprintk(4, "ir command = %08x\n", ircom); - set_bit(EV_KEY, ir->input_dev->evbit); - set_bit(EV_REP, ir->input_dev->evbit); - set_bit(EV_MSC, ir->input_dev->evbit); + if (rcdev) { + switch (av7110->ir.ir_config) { + case IR_RC5: /* RC5: 5 bits device address, 6 bits command */ + command = ircom & 0x3f; + addr = (ircom >> 6) & 0x1f; + scancode = RC_SCANCODE_RC5(addr, command); + toggle = ircom & 0x0800; + proto = RC_PROTO_RC5; + break; - set_bit(MSC_RAW, ir->input_dev->mscbit); - set_bit(MSC_SCAN, ir->input_dev->mscbit); + case IR_RCMM: /* RCMM: ? bits device address, ? bits command */ + command = ircom & 0xff; + addr = (ircom >> 8) & 0x1f; + scancode = ircom; + toggle = ircom & 0x8000; + proto = RC_PROTO_OTHER; + break; - memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit)); + case IR_RC5_EXT: + /* + * extended RC5: 5 bits device address, 7 bits command + * + * Extended RC5 uses only one start bit. The second + * start bit is re-assigned bit 6 of the command bit. + */ + command = ircom & 0x3f; + addr = (ircom >> 6) & 0x1f; + if (!(ircom & 0x1000)) + command |= 0x40; + scancode = RC_SCANCODE_RC5(addr, command); + toggle = ircom & 0x0800; + proto = RC_PROTO_RC5; + break; + default: + dprintk(2, "unknown ir config %d\n", + av7110->ir.ir_config); + return; + } - for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) { - if (ir->key_map[i] > KEY_MAX) - ir->key_map[i] = 0; - else if (ir->key_map[i] > KEY_RESERVED) - set_bit(ir->key_map[i], ir->input_dev->keybit); + rc_keydown(rcdev, proto, scancode, toggle != 0); } - - ir->input_dev->keycode = ir->key_map; - ir->input_dev->keycodesize = sizeof(ir->key_map[0]); - ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map); } -/* check for configuration changes */ -int av7110_check_ir_config(struct av7110 *av7110, int force) +int av7110_set_ir_config(struct av7110 *av7110) { - int i; - int modified = force; - int ret = -ENODEV; - - for (i = 0; i < av_cnt; i++) - if (av7110 == av_list[i]) - break; - - if (i < av_cnt && av7110) { - if ((av7110->ir.protocol & 1) != ir_protocol[i] || - av7110->ir.inversion != ir_inversion[i]) - modified = true; - - if (modified) { - /* protocol */ - if (ir_protocol[i]) { - ir_protocol[i] = 1; - av7110->ir.protocol = IR_RCMM; - av7110->ir.ir_config = 0x0001; - } else if (FW_VERSION(av7110->arm_app) >= 0x2620) { - av7110->ir.protocol = IR_RC5_EXT; - av7110->ir.ir_config = 0x0002; - } else { - av7110->ir.protocol = IR_RC5; - av7110->ir.ir_config = 0x0000; - } - /* inversion */ - if (ir_inversion[i]) { - ir_inversion[i] = 1; - av7110->ir.ir_config |= 0x8000; - } - av7110->ir.inversion = ir_inversion[i]; - /* update ARM */ - ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1, - av7110->ir.ir_config); - } else - ret = 0; + dprintk(4, "ir config = %08x\n", av7110->ir.ir_config); - /* address */ - if (av7110->ir.device_mask != ir_device_mask[i]) - av7110->ir.device_mask = ir_device_mask[i]; - } - - return ret; + return av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1, + av7110->ir.ir_config); } - -/* /proc/av7110_ir interface */ -static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer, - size_t count, loff_t *pos) +static int change_protocol(struct rc_dev *rcdev, u64 *rc_type) { - char *page; + struct av7110 *av7110 = rcdev->priv; u32 ir_config; - int size = sizeof ir_config + sizeof av_list[0]->ir.key_map; - int i; - if (count < size) + if (*rc_type & RC_PROTO_BIT_UNKNOWN) { + ir_config = IR_RCMM; + *rc_type = RC_PROTO_UNKNOWN; + } else if (*rc_type & RC_PROTO_BIT_RC5) { + if (FW_VERSION(av7110->arm_app) >= 0x2620) + ir_config = IR_RC5_EXT; + else + ir_config = IR_RC5; + *rc_type = RC_PROTO_BIT_RC5; + } else { return -EINVAL; - - page = vmalloc(size); - if (!page) - return -ENOMEM; - - if (copy_from_user(page, buffer, size)) { - vfree(page); - return -EFAULT; } - memcpy(&ir_config, page, sizeof ir_config); - - for (i = 0; i < av_cnt; i++) { - /* keymap */ - memcpy(av_list[i]->ir.key_map, page + sizeof ir_config, - sizeof(av_list[i]->ir.key_map)); - /* protocol, inversion, address */ - ir_protocol[i] = ir_config & 0x0001; - ir_inversion[i] = ir_config & 0x8000 ? 1 : 0; - if (ir_config & 0x4000) - ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f); - else - ir_device_mask[i] = IR_ALL; - /* update configuration */ - av7110_check_ir_config(av_list[i], false); - input_register_keys(&av_list[i]->ir); - } - vfree(page); - return count; -} + if (ir_config == av7110->ir.ir_config) + return 0; -static const struct file_operations av7110_ir_proc_fops = { - .owner = THIS_MODULE, - .write = av7110_ir_proc_write, - .llseek = noop_llseek, -}; + av7110->ir.ir_config = ir_config; -/* interrupt handler */ -static void ir_handler(struct av7110 *av7110, u32 ircom) -{ - dprintk(4, "ir command = %08x\n", ircom); - av7110->ir.ir_command = ircom; - tasklet_schedule(&av7110->ir.ir_tasklet); + return av7110_set_ir_config(av7110); } - int av7110_ir_init(struct av7110 *av7110) { - struct input_dev *input_dev; - static struct proc_dir_entry *e; - int err; - - if (av_cnt >= ARRAY_SIZE(av_list)) - return -ENOSPC; + struct rc_dev *rcdev; + struct pci_dev *pci; + int ret; - av_list[av_cnt++] = av7110; - av7110_check_ir_config(av7110, true); - - timer_setup(&av7110->ir.keyup_timer, av7110_emit_keyup, 0); - - input_dev = input_allocate_device(); - if (!input_dev) + rcdev = rc_allocate_device(RC_DRIVER_SCANCODE); + if (!rcdev) return -ENOMEM; - av7110->ir.input_dev = input_dev; - snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys), - "pci-%s/ir0", pci_name(av7110->dev->pci)); + pci = av7110->dev->pci; - input_dev->name = "DVB on-card IR receiver"; - - input_dev->phys = av7110->ir.input_phys; - input_dev->id.bustype = BUS_PCI; - input_dev->id.version = 2; - if (av7110->dev->pci->subsystem_vendor) { - input_dev->id.vendor = av7110->dev->pci->subsystem_vendor; - input_dev->id.product = av7110->dev->pci->subsystem_device; + snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys), + "pci-%s/ir0", pci_name(pci)); + + rcdev->device_name = av7110->card_name; + rcdev->driver_name = KBUILD_MODNAME; + rcdev->input_phys = av7110->ir.input_phys; + rcdev->input_id.bustype = BUS_PCI; + rcdev->input_id.version = 2; + if (pci->subsystem_vendor) { + rcdev->input_id.vendor = pci->subsystem_vendor; + rcdev->input_id.product = pci->subsystem_device; } else { - input_dev->id.vendor = av7110->dev->pci->vendor; - input_dev->id.product = av7110->dev->pci->device; - } - input_dev->dev.parent = &av7110->dev->pci->dev; - /* initial keymap */ - memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map); - input_register_keys(&av7110->ir); - err = input_register_device(input_dev); - if (err) { - input_free_device(input_dev); - return err; + rcdev->input_id.vendor = pci->vendor; + rcdev->input_id.product = pci->device; } - /* - * Input core's default autorepeat is 33 cps with 250 msec - * delay, let's adjust to numbers more suitable for remote - * control. - */ - input_enable_softrepeat(input_dev, 250, 125); + rcdev->dev.parent = &pci->dev; + rcdev->allowed_protocols = RC_PROTO_BIT_RC5 | RC_PROTO_BIT_UNKNOWN; + rcdev->change_protocol = change_protocol; + rcdev->map_name = RC_MAP_HAUPPAUGE; + rcdev->priv = av7110; - if (av_cnt == 1) { - e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops); - if (e) - proc_set_size(e, 4 + 256 * sizeof(u16)); - } + av7110->ir.rcdev = rcdev; + av7110->ir.ir_config = IR_RC5; + av7110_set_ir_config(av7110); - tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir); - av7110->ir.ir_handler = ir_handler; + ret = rc_register_device(rcdev); + if (ret) { + av7110->ir.rcdev = NULL; + rc_free_device(rcdev); + } - return 0; + return ret; } - void av7110_ir_exit(struct av7110 *av7110) { - int i; - - if (av_cnt == 0) - return; - - del_timer_sync(&av7110->ir.keyup_timer); - av7110->ir.ir_handler = NULL; - tasklet_kill(&av7110->ir.ir_tasklet); - - for (i = 0; i < av_cnt; i++) - if (av_list[i] == av7110) { - av_list[i] = av_list[av_cnt-1]; - av_list[av_cnt-1] = NULL; - break; - } - - if (av_cnt == 1) - remove_proc_entry("av7110_ir", NULL); - - input_unregister_device(av7110->ir.input_dev); - - av_cnt--; + rc_unregister_device(av7110->ir.rcdev); } //MODULE_AUTHOR("Holger Waechtler , Oliver Endriss "); diff --git a/drivers/media/rc/keymaps/rc-hauppauge.c b/drivers/media/rc/keymaps/rc-hauppauge.c index 582aa9012443..c117e9fc2697 100644 --- a/drivers/media/rc/keymaps/rc-hauppauge.c +++ b/drivers/media/rc/keymaps/rc-hauppauge.c @@ -233,6 +233,7 @@ static struct rc_map_table rc5_hauppauge_new[] = { * This one also uses RC-5 protocol * Keycodes start with address = 0x00 */ + { 0x000f, KEY_TV }, { 0x001f, KEY_TV }, { 0x0020, KEY_CHANNELUP }, { 0x000c, KEY_RADIO },